refactor a bit more

trunk/fcl/include/fcl/geometric_shape_to_BVH_model.h

trunk/fcl/include/fcl/geometric_shapes.h

trunk/fcl/include/fcl/motion.h

trunk/fcl/src/AABB.cpp

trunk/fcl/src/BVH_model.cpp

trunk/fcl/src/BVH_utility.cpp

trunk/fcl/src/RSS.cpp

trunk/fcl/src/geometric_shapes_intersect.cpp

trunk/fcl/src/intersect.cpp

trunk/fcl/src/matrix_3f.cpp

trunk/fcl/test/test_core_conservative_advancement.cpp

trunk/fcl/test/test_core_deformable_object.cpp

trunk/fcl/test/test_core_geometric_shapes.cpp

trunk/fcl/test/test_core_utility.h